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2 *
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21
22 // MARKER(update_precomp.py): autogen include statement, do not remove
23 #include "precompiled_svx.hxx"
24 #include <svx/sdrundomanager.hxx>
25
26 //////////////////////////////////////////////////////////////////////////////
27
SdrUndoManager(sal_uInt16 nMaxUndoActionCount)28 SdrUndoManager::SdrUndoManager(sal_uInt16 nMaxUndoActionCount)
29 : EditUndoManager(nMaxUndoActionCount),
30 maEndTextEditHdl(),
31 mpLastUndoActionBeforeTextEdit(0),
32 mbEndTextEditTriggeredFromUndo(false)
33 {
34 }
35
~SdrUndoManager()36 SdrUndoManager::~SdrUndoManager()
37 {
38 }
39
Undo()40 sal_Bool SdrUndoManager::Undo()
41 {
42 if(isTextEditActive())
43 {
44 sal_Bool bRetval(sal_False);
45
46 // we are in text edit mode
47 if(GetUndoActionCount() && mpLastUndoActionBeforeTextEdit != GetUndoAction(0))
48 {
49 // there is an undo action for text edit, trigger it
50 bRetval = EditUndoManager::Undo();
51 }
52 else
53 {
54 // no more text edit undo, end text edit
55 mbEndTextEditTriggeredFromUndo = true;
56 maEndTextEditHdl.Call(this);
57 mbEndTextEditTriggeredFromUndo = false;
58 }
59
60 return bRetval;
61 }
62 else
63 {
64 // no undo triggered up to now, trigger local one
65 return SfxUndoManager::Undo();
66 }
67 }
68
Redo()69 sal_Bool SdrUndoManager::Redo()
70 {
71 sal_Bool bRetval(sal_False);
72
73 if(isTextEditActive())
74 {
75 // we are in text edit mode
76 bRetval = EditUndoManager::Redo();
77 }
78
79 if(!bRetval)
80 {
81 // no redo triggered up to now, trigger local one
82 bRetval = SfxUndoManager::Redo();
83 }
84
85 return bRetval;
86 }
87
Clear()88 void SdrUndoManager::Clear()
89 {
90 if(isTextEditActive())
91 {
92 while(GetUndoActionCount() && mpLastUndoActionBeforeTextEdit != GetUndoAction(0))
93 {
94 RemoveLastUndoAction();
95 }
96
97 // urgently needed: RemoveLastUndoAction does NOT correct the Redo stack by itself (!)
98 ClearRedo();
99 }
100 else
101 {
102 // call parent
103 EditUndoManager::Clear();
104 }
105 }
106
SetEndTextEditHdl(const Link & rLink)107 void SdrUndoManager::SetEndTextEditHdl(const Link& rLink)
108 {
109 maEndTextEditHdl = rLink;
110
111 if(isTextEditActive())
112 {
113 // text edit start, remember last non-textedit action for later cleanup
114 mpLastUndoActionBeforeTextEdit = GetUndoActionCount() ? GetUndoAction(0) : 0;
115 }
116 else
117 {
118 // text edit ends, pop all textedit actions up to the remembered non-textedit action from the start
119 // to set back the UndoManager to the state before text edit started. If that action is already gone
120 // (due to being removed from the undo stack in the meantime), all need to be removed anyways
121 while(GetUndoActionCount() && mpLastUndoActionBeforeTextEdit != GetUndoAction(0))
122 {
123 RemoveLastUndoAction();
124 }
125
126 // urgently needed: RemoveLastUndoAction does NOT correct the Redo stack by itself (!)
127 ClearRedo();
128
129 // forget marker again
130 mpLastUndoActionBeforeTextEdit = 0;
131 }
132 }
133
isTextEditActive() const134 bool SdrUndoManager::isTextEditActive() const
135 {
136 return maEndTextEditHdl.IsSet();
137 }
138
139 //////////////////////////////////////////////////////////////////////////////
140 // eof
141